Reinforcing steel bar tensile strength testing machine
By designing the plate and auxiliary block in the tensile strength test machine of the steel bar, combined with the structure of the shaking wheel and the bidirectional screw, the problem that the existing test machine cannot fix the square steel bars is solved, and flexible fixing and reinforcement of the cylindrical and square steel bars is achieved, which improves the flexibility and applicability of the test machine.
Patent Information
- Application Number
- CN202421489860.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The existing tensile strength test machines can only perform fixed tests on cylindrical steel bars, and cannot flexibly fix square steel bars, which is inconvenient to use.
A steel bar tensile strength test machine is designed, adopting a structure of a plate and an auxiliary block. Through the cooperation of a shaking wheel and a bidirectional screw, square steel bars can be flexibly fixed, and the square steel bars can be reinforced through twisting and fixing screws.
It realizes flexible fixing and reinforcement of cylindrical and square steel bars, and improves the flexibility and applicability of the test machine.
Smart Images
Figure CN223037611U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a testing machine, in particular to a tensile strength testing machine for steel bars. Background Art
[0002] In building structural materials, steel bars are an important component, providing stable support for buildings.
[0003] The quality of steel bars directly affects the applicability and safety of the structure. To ensure the safety of buildings, it is necessary to detect the tensile strength of steel bars, so a tensile strength testing machine for steel bars is required.
[0004] For the existing tensile strength testing machine for steel bars, the parts of the steel bar near the upper and lower ends are fixed, and then the fixing device fixed to the upper part of the steel bar is stretched to conduct the tensile strength test. However, due to the different shapes of the steel bar surface, generally there are cylinders and cubes, and the existing device can only fix and test the steel bars with a circular surface, so the use is relatively inflexible. Summary of the Utility Model
[0005] The main purpose of the present disclosure is to provide a tensile strength testing machine for steel bars to effectively solve the problems raised by the inventor in the above background art.
[0006] To achieve the above object, the technical solution adopted by the utility model is as follows:
[0007] A tensile strength testing machine for steel bars includes two fixing plates. Connecting columns are fixedly installed between the four corners of the two fixing plates. A fixing frame is fixedly installed on the upper end of the bottom fixing plate, and a hydraulic cylinder is fixedly installed on the top fixing plate. The hydraulic cylinder penetrates the fixing plate in the vertical direction. A lifting plate is slidably installed on the connecting column. The output end of the hydraulic cylinder is fixedly connected to the upper end of the lifting plate through a piston rod. A fixing frame is also fixedly installed at the lower end of the lifting plate. Fixing rings for fixing cylindrical steel bars and pressing plates for fixing square steel bars are provided in both of the two fixing frames.
[0008] Preferably, a first horizontal plate is fixedly installed inside the fixing frame near the lower end. The first horizontal plate horizontally penetrates the fixing frame. A first bidirectional screw is rotatably installed between the left and right inner walls of the first horizontal plate, and a first sliding rod is fixedly installed. Slide blocks are threadedly installed on the threads on both sides of the first bidirectional screw, and the two slide blocks are both slidably connected to the first sliding rod. Openings are provided on both the upper and lower sides of the first horizontal plate. The upper and lower ends of the two slide blocks extend to the outside of the first horizontal plate through the openings. Four fixing rings are provided, and several fixing rings are respectively fixedly installed on the sides of the two slide blocks close to each other, and are respectively arranged on the upper and lower sides of the first horizontal plate. A first handwheel is rotatably installed on the right side of the first horizontal plate. The first handwheel is fixedly connected to the rotating shaft of the first bidirectional screw. By rotating the first handwheel to rotate the first bidirectional screw, the two slide blocks slide towards each other on the first sliding rod, thereby driving the fixing rings on both sides to move towards each other, and abutting the inner sides of the fixing rings against the outer sides of the cylindrical steel bars to achieve fixation.
[0009] Preferably, a second horizontal plate is fixedly installed inside the fixing frame near the upper end. The second horizontal plate horizontally penetrates the fixing frame. A second bidirectional screw is rotatably installed between the left and right inner walls of the second horizontal plate, and a second sliding rod is fixedly installed. Slide blocks are threadedly installed on the threads on both sides of the second bidirectional screw, and the two slide blocks are both slidably connected to the second sliding rod. Openings are provided on both the upper and lower sides of the second horizontal plate. The two slide blocks both extend to the upper end of the second horizontal plate through the openings. Two abutting plates are provided. The two abutting plates are fixedly connected to the inner sides of the two slide blocks through connecting rods respectively. A second handwheel is rotatably installed on the right side of the second horizontal plate. The second handwheel is fixedly connected to the rotating shaft of the second bidirectional screw. By rotating the second handwheel to rotate the second bidirectional screw, the two slide blocks slide towards each other on the second sliding rod, thereby driving the abutting plates fixedly connected to the connecting rods on both sides to move towards each other, and abutting the two abutting plates against the square steel bars to achieve fixation.
[0010] Preferably, fixing screws penetrate and are threadedly installed through the front and back of the fixing frame. Auxiliary blocks are rotatably installed at the ends of the two fixing screws close to each other, and turning knobs are fixedly installed at the ends of the two fixing screws away from each other. By rotating the turning knobs to rotate the fixing screws, the auxiliary blocks move, and the auxiliary blocks are moved inwards to abut against the square steel bars to achieve a reinforcement effect.
[0011] Preferably, anti-slip pads are fixedly installed on the sides of the two auxiliary blocks close to each other. A bottom groove is provided in the middle of the inner side of the bottom of the fixing frame. The anti-slip pads prevent the steel bars from sliding during detection, while the bottom groove facilitates the placement of the steel bars.
[0012] Preferably, the inner sides of several fixing rings are all arc-shaped, and anti-slip pads are fixedly installed on the inner sides. Anti-slip pads are also fixedly installed on the sides of the two abutting plates close to each other. The anti-slip pads prevent sliding during the fixation of the steel bars and affect the detection.
[0013] In view of this, compared with the prior art, the beneficial effects of the present utility model are:
[0014] In this application, by setting the backing plate and the auxiliary block, when it is necessary to fix the steel bar with a square surface, first rotate the bidirectional screw rod 2 through the handwheel 2 to make the two sliding plates 2 slide closer to each other on the sliding rod 2, so as to drive the two backing plates to move closer to each other and contact the left and right sides of the steel bar for fixation. At the same time, rotate the fixing screw rod through the torsion to make the auxiliary block close to the steel bar and contact the surface of the steel bar, so as to carry out reinforcement. It can not only fix the steel bar with a circular surface, but also fix the steel bar with a square surface, and is more flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The following shows the structural schematic diagram of the steel bar tensile strength testing machine provided by the present utility model;
[0016] Figure 2 The following shows the front elevation sectional view of the fixing frame of the steel bar tensile strength testing machine provided by the present utility model;
[0017] Figure 3 The following shows the top view of the fixing frame of the steel bar tensile strength testing machine provided by the present utility model;
[0018] Figure 4 The following shows the top view of the first cross plate of the steel bar tensile strength testing machine provided by the present utility model.
[0019] Reference numerals: 1, fixing plate; 2, connecting column; 3, fixing frame; 4, hydraulic cylinder; 5, lifting plate; 6, bottom groove; 7, first cross plate; 8, first bidirectional screw rod; 9, first sliding rod; 10, first sliding plate; 11, fixing ring; 12, first handwheel; 13, opening; 14, second cross plate; 15, second bidirectional screw rod; 16, second sliding rod; 17, second sliding plate; 18, connecting rod; 19, backing plate; 20, second handwheel; 21, anti-slip pad; 22, fixing screw rod; 23, auxiliary block; 24, torsion. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0021] Please refer to Figures 1-4 , the present utility model provides the following embodiments:
[0022] A tensile strength testing machine for steel bars, comprising two fixing plates 1. Connecting columns 2 are fixedly installed between the four corners of the two fixing plates 1. A fixing frame 3 is fixedly installed on the upper end of the bottom fixing plate 1, and a hydraulic cylinder 4 is fixedly installed on the top fixing plate 1. The hydraulic cylinder 4 penetrates the fixing plate 1 in the vertical direction. A lifting plate 5 is slidably installed on the connecting column 2. The output end of the hydraulic cylinder 4 is fixedly connected to the upper end of the lifting plate 5 through a piston rod. A fixing frame 3 is also fixedly installed at the lower end of the lifting plate 5. Fixing rings 11 for fixing cylindrical steel bars and abutting plates 19 for fixing square steel bars are provided in both fixing frames 3.
[0023] Specifically, a first horizontal plate 7 is fixedly installed inside the fixing frame 3 near the lower end. The first horizontal plate 7 horizontally penetrates the fixing frame 3. A first bidirectional screw 8 is rotatably installed between the left and right inner walls of the first horizontal plate 7, and a first sliding rod 9 is fixedly installed. Sliding plates 10 are threadedly installed on the threads on both sides of the first bidirectional screw 8, and the two sliding plates 10 are both slidably connected to the first sliding rod 9. Openings 13 are provided on both the upper and lower sides of the first horizontal plate 7. The upper and lower ends of the two sliding plates 10 extend out of the first horizontal plate 7 through the openings 13. Four fixing rings 11 are provided. A plurality of fixing rings 11 are respectively fixedly installed on the mutually close sides of the two sliding plates 10, and are respectively arranged on the upper and lower sides of the first horizontal plate 7. A first handwheel 12 is rotatably installed on the right side of the first horizontal plate 7. The first handwheel 12 is fixedly connected to the rotating shaft of the first bidirectional screw 8. By rotating the first bidirectional screw 8 through the first handwheel 12, the two sliding plates 10 slide towards each other on the first sliding rod 9, thereby driving the fixing rings 11 on both sides to move towards each other, and making the inner sides of the fixing rings 11 abut against the outer sides of the cylindrical steel bars to achieve fixation.
[0024] Specifically, a second horizontal plate 14 is fixedly installed inside the fixing frame 3 near the upper end. The second horizontal plate 14 horizontally penetrates the fixing frame 3. A second bidirectional screw 15 is rotatably installed between the left and right inner walls of the second horizontal plate 14, and a second sliding rod 16 is fixedly installed. Sliding plates 17 are threadedly installed on the threads on both sides of the second bidirectional screw 15, and the two sliding plates 17 are both slidably connected to the second sliding rod 16. Openings 13 are provided on both the upper and lower sides of the second horizontal plate 14. The two sliding plates 17 both extend out of the upper end of the second horizontal plate 14 through the openings 13. Two abutting plates 19 are provided. The two abutting plates 19 are fixedly connected to the inner sides of the two sliding plates 17 through connecting rods 18 respectively. A second handwheel 20 is rotatably installed on the right side of the second horizontal plate 14. The second handwheel 20 is fixedly connected to the rotating shaft of the second bidirectional screw 15. By rotating the second bidirectional screw 15 through the second handwheel 20, the two sliding plates 17 slide towards each other on the second sliding rod 16, thereby driving the abutting plates 19 fixedly connected to the connecting rods 18 on both sides to move towards each other, and making the two abutting plates 19 approach each other and abut against the square steel bar for fixation.
[0025] Specifically, the fixing frame 3 is penetrated through both the front and the rear and fixedly installed with fixing screws 22 by threading. One ends of the two fixing screws 22 close to each other are rotatably installed with auxiliary blocks 23, and one ends of the two fixing screws 22 away from each other are fixedly installed with turning knobs 24. The fixing screws 22 are rotated by the turning knobs 24 to move the auxiliary blocks 23. The auxiliary blocks 23 are moved inward to contact the square steel bars, thereby realizing the reinforcement effect.
[0026] Specifically, anti-slip pads 21 are fixedly installed on one sides of the two auxiliary blocks 23 close to each other. A bottom groove 6 is opened in the middle of the inner side of the bottom of the fixing frame 3. The anti-slip pads 21 prevent the steel bars from sliding during detection. However, the bottom groove 6 facilitates the insertion of the steel bars.
[0027] Specifically, the inner sides of several fixing rings 11 are all arc-shaped, and anti-slip pads 21 are fixedly installed on the inner sides. Anti-slip pads 21 are also fixedly installed on one sides of the two abutting plates 19 close to each other. When the steel bars are fixed by the anti-slip pads 21, sliding is prevented from affecting the detection.
[0028] The working principle of this utility model is as follows: The bottom of the steel bar is inserted into the bottom groove 6 through the opening 13, penetrating the first cross plate 7 and the second cross plate 14. Then, the hydraulic cylinder 4 is used to push the lifting plate 5 downward, so that the bottom groove 6 in the upper fixing frame 3 abuts against the top of the steel bar. If the steel bar is cylindrical, the first bidirectional screw 8 is rotated by the first handwheel 12, so that the two first sliding plates 10 slide close to each other on the first sliding rod 9, thereby driving the fixing rings 11 on both sides to move close to each other and contact the cylindrical steel bar to achieve fixation. If the steel bar is square, the second bidirectional screw 15 is rotated by the second handwheel 20, so that the two second sliding plates 17 slide close to each other on the second sliding rod 16, thereby driving the abutting plates 19 on the two connecting rods 18 on both sides to move close to each other and contact the left and right sides of the square steel bar for fixation. Then, the two fixing screws 22 are rotated by the two turning knobs 24, so that the two auxiliary blocks 23 move close to each other and contact the front and rear sides of the square steel bar for reinforcement. After the steel bar is fixed, the hydraulic cylinder 4 drives the lifting plate 5 to rise, so that the upper fixing frame 3 rises to stretch the steel bar, thereby performing the tensile strength test.
[0029] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0030] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and variations can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.
Claims
1. A steel bar tensile strength testing machine, comprising two fixing plates (1), characterized in that: Connecting columns (2) are fixedly installed between the four corner positions of the two fixing plates (1); a fixing frame (3) is fixedly installed on the upper end of the bottom fixing plate (1); a hydraulic cylinder (4) is fixedly installed on the top fixing plate (1); the hydraulic cylinder (4) penetrates the fixing plate (1) in the vertical direction; a lifting plate (5) is slidably installed on the connecting column (2); the output end of the hydraulic cylinder (4) is fixedly connected to the upper end of the lifting plate (5) through a piston rod; a fixing frame (3) is also fixedly installed on the lower end of the lifting plate (5); a fixing ring (11) for fixing cylindrical steel bars is provided in the two fixing frames (3), and a stop plate (19) for fixing square steel bars is provided in both fixing frames (3).
2. A steel bar tensile strength testing machine according to claim 1, characterized in that: A transverse plate (7) is fixedly installed near the lower end of the fixed frame (3), and the transverse plate (7) passes through the fixed frame (3) horizontally. A bidirectional screw (8) is rotatably installed between the left and right inner walls of the transverse plate (7), and a sliding rod (9) is fixedly installed. Slide plates (10) are threadedly installed on the threads on both sides of the bidirectional screw (8), and the two slide plates (10) are slidably connected to the sliding rod (9). Openings (13) are provided on the upper and lower sides of the transverse plate (7), and the upper and lower ends of the two slide plates (10) extend out of the transverse plate (7) through the openings (13). Four fixing rings (11) are provided, and a plurality of fixing rings (11) are respectively fixedly installed on the sides of the two slide plates (10) close to each other, and are respectively arranged on the upper and lower sides of the transverse plate (7). A rocker (12) is rotatably installed on the right side of the transverse plate (7), and the rocker (12) is fixedly connected to the rotating shaft of the bidirectional screw (8).
3. A steel bar tensile strength testing machine according to claim 1, characterized in that: A second transverse plate (14) is fixedly installed near the upper end of the fixed frame (3), and the second transverse plate (14) passes through the fixed frame (3) horizontally. A second bidirectional screw rod (15) is rotatably installed between the left and right inner walls of the second transverse plate (14), and a second sliding rod (16) is fixedly installed. Two sliding plates (17) are threadedly installed on the threads on both sides of the second bidirectional screw rod (15), and the two sliding plates (17) are slidably connected to the two sliding rods (16). The second transverse plate (14) is provided with openings (13) on both upper and lower sides, and the two sliding plates (17) extend through the openings (13) to the upper end of the second transverse plate (14). Two abutment plates (19) are provided, and the two abutment plates (19) are respectively fixedly connected to the inner sides of the two sliding plates (17) through connecting rods (18). A second rocking wheel (20) is rotatably installed on the right side of the second transverse plate (14), and the second rocking wheel (20) is fixedly connected to the rotating shaft of the second bidirectional screw rod (15).
4. A steel bar tensile strength testing machine according to claim 1, characterized in that: The fixing frame (3) is penetrated by fixing screws (22) at the front and rear and threadedly installed. The ends of the two fixing screws (22) close to each other are both rotated to install the auxiliary block (23), and the ends of the two fixing screws (22) away from each other are both fixedly installed with the twisting wheel (24).
5. A steel bar tensile strength testing machine according to claim 4, characterized in that: The two auxiliary blocks (23) are both fixedly mounted with anti-skid pads (21) on the sides close to each other, and a bottom groove (6) is provided in the middle of the inner side of the bottom of the fixing frame (3).
6. A steel bar tensile strength testing machine according to claim 1, characterized in that: The inner sides of the plurality of fixing rings (11) are all arc-shaped, and anti-skid pads (21) are fixedly installed on the inner sides; and the anti-skid pads (21) are also fixedly installed on the sides of the two abutment plates (19) close to each other.